PROPEAMUSSIIDAE  

Propeamussium alcocki

(Smith, 1894)

Figure(s)

 

Lectotype

 

Original name   Amussium alcocki Smith, 1894
Autoreference   Smith, 1894: 172, pl. 5, figs 15-16.
Reference   Smith, E.A., 1894. Natural history notes from H.M. Indian Marine Survey Steamer "Investigator", Ser. 2 (10). Report upon some Mollusca dregded in the Bay of Bengal and the Arabian Sea. - Annals and Magazine of Natural History, ser. 6, 14: 157-174.
Type data   Lectotype (pr: H 40.4, L 39.8, D 7.9 mm) Zoological Survey of India, New Alipore, Calcutta (ZSI 6154/9), designated by Dijkstra (1995: 13). Type locality: Laccadive Sea, 15*02'N, 72*34'E, 1353 m, alive, grey ooze, 05.05.1890 ("Investigator" stn 105).
Description

  Shell up to ca. 50 mm high, translucent, creamy, fragile, flattened, circular, inequivalve, inequilateral, auricles equal and smooth.

  Left valve slightly more inflated than right valve, with some commarginal growth lines, and 1-3 delicate radial lirae near posterior margin. Right valve with widely spaced commarginal lirae. Internal ribs 8-10. Byssal notch and ctenolium lacking.

Distribution

 

Gulf of Aden, Laccadive Sea (TL), Bay of Bengal, Indonesia, Coral Sea, New Caledonia, Loyalty Islands, Wallis & Futuna, Vanuatu

Habitat  Living bathyally on soft bottom assemblages.